COMPUTERISED FEED GROUTING SYSTEM FOR MULTIPLE INLET SLEEVE PIPES

摘要

A system for feeding consolidating mixture for multiple inlet sleeve pipes used for the consolidation grouting of loose ground comprising a computerised distributor valve having an inlet connection connected to a grout pumping system and a plurality of outlet connections capable of delivering cementitious grout to each of the individual inlet pipes of the multiple inlet sleeve pipe connected hydraulically thereto. Each outlet connection has a servo-valve, a pressure measuring device and a flow measuring device connected to a process controller capable of carrying out any desired feed sequence to each individual pipe present in the sleeve pipe, monitoring the pressure and volume of mixture injected.

主权项

1. A system for feeding consolidating 1 mixture for multiple inlet sleeve pipes suitable for the consolidation of loose ground of the type comprising at least one inlet conduit connected to the grout pumping system and a plurality of outlet conduits each of which can be connected to the corresponding inlet conduit of the said sleeve pipe, wherein it comprises:
a main delivery body, preferably comprising a conduit which extends linearly having at least one inlet connection connected to the existing grout pumping station and a plurality of outlet connections intended to feed the corresponding inlets present in the multiple feed sleeve pipe; each outlet connection has an opening/closing servo-valve comprising integrated operating means which can be controlled remotely; each outlet connection has a flow transducer capable of generating electrical signals proportional to the flow of grout passing through, the measuring device being mounted either upstream or downstream of the servo-valve; each outlet connection has a pressure transducer capable of generating electrical signals proportional to the pressure of the injected grout measured downstream from the servo-valve; a programmable controller provided with sufficient memory and a sufficient number of electrical input and output signals; connection means, preferably but not necessarily of the electrical type, between the controller and the servo-valves, and flow and pressure measuring devices; an operating software program downloaded or downloadable into the controller to allow any sequence of opening the servo-valves during the grouting stage to be performed;the controller being capable of implementing any opening/closing sequence of the servo-valves on the basis of instructions included in the operating program, keeping the pressure and flow values of the grout through each outlet connection controlled and/or recorded respectively.